C Program Write a Program to Check No is +Ve ,-Ve, and Zero

void main() 
 { 
     int a; 
     clrscr(); 
     printf("Enter the Value of a :"); 
     scanf("%d",&a); 
     if(a>0) 
      { 
            printf("a is Positive"); 
      } 
    else if(a==0) 
     { 
            printf("a is Zero"); 
     } 
    else 
    { 
           printf("a is Nagative"); 
    } 
           getch(); 
 }